de la hunty



T. W. DE LA HUNTY. momma nsvlcs. APPLICATION FILED OCT. 8, 192|.

lPatentd Nov. 2l, T922.,

2 SHEETS-SHEET l.

T. W. DE LA HUNTY.

MOLDING DEVICE. APPLlcATloN mit) oc'r. 8.1921.

154363242. Patented Nov. 21, E922.,

2 SHEETS-'SHEET 2.

Patented Nev. ai, raza.

Y rr a fr maar arata THOMAS DE LA HUNTY, OF BUFFALO, NEW YORK.

` nonnina Davies.

Application led October 8,

To .all whom t may concern Y Be it known that I, THOMAS W. Dn LA HUN'rr, a citizen of the United States, re-

Vsiding at Bualo, in the eountyfof Erie and State of New York, have inventeda new and i useful Improvement in Molding Devices, of

` each other.

i operations may to produce accurate castings. y

The objects of this invention are tofproduce a, device whereby two of these three be made withoutv requiring any skill or accuracy and which therefore greatly reduces the cost of .making thel v..molds; also to provide a device of this kind in which the usual flaskfor the drag may be eliminated; also to provide a device which facilitates the placing of the cope into proper relation to the drag of the mold; also tok .improve the construction of devices of ghice kind inother respects hereinafter speci- In the laccompanying drawings: y Fig. l is a central sectional elevation of a molding device embodying the invention.

Fig. Llis a perspectivel view of a cope adapted to be used in connection'withthe drag shown in Figs. 1 and'B. y, 1

. Fig. 5 is a perspective view of the guide device for enabling the drag and cope to be placed in correct relation. to eachy other.

lili f The drag A of the mold', as shown `in Figs.

l and 3, maybe'formed' in' an open bed of sand orvinan open pit B, no flask beingre- 4quired for the drag. If forany reason it yis desired to use a flask,

ing the cope', this can be :done `without inl volving any change in the-invention. The v mold is formed by pressing `apattern A ldownwardly into sand which is confined in a. sand retainer @consisting of suitable side i nally placed The pattern Vin a cylinder d rigidly secured .After the pattern has for example in form- 1921. Serial No. 506,228.

walls which hold'the sand against, lateral displacement. This sand retainer is origiinto the position shown in dotted lines in Fig. l, above the level of the sand in the pit or bed B and is filled with sand up to the top edges of the walls. The y pattern A', is preferably mounted on a plate a detachably connected, in the construction shown, to a plate l secured on a plunger l). y A is first pressed into the sand confined Vwithin the4 sand retainer C and ywhen'the pattern has been fully embedded in the sand in the retainer, the walls thereof will engage with the pattern plate a land will bepressed downwardly into the sand bed B so asto compressv the sand formingl the mold to the desired extent. The exten of the compression `can b e readily controlled by regulating the extent to .which the sand retainer projects abcvethe level ofthe sand in the pit-B,.or in any other suitable manner. y

Forexample.y if a small. shallow pattern is used,the sand retainer should extend above the level of the sand in the pit B to a greater extent vthan when a large, `deep patternis used. Thev plunder D inthe particular'construction` shown in the drawings, is arranged onthe frame vcl2 of a car. or other vehicle. This car,r in

vthe -construction shown, yis provided with wheels Z3 arranged to operate on tracks l? and the sand bed B is arranged between the tracks so that the car with the pattern secured thereonl can be readilymoved into operative relation to any number of sand beds, flasks `orthe like arranged betweenfthe tracks. y 'v Figs. 2 and 3 are plan views thereof look- ,ing upv and down respectively. on line 2 3, Fig. 1.

confining the sand and preventing the spreading thereof laterally as the pattern is .forced into the sand within the frame. been impressed into the sand` the frame is moved from the dotted line -positiontothe full line position in Fig. 1 and 'remains in this position untilthe casting is completed, thus acting 4as a retainer forthe sand and preventing the metal which is poured into themoldfrom breaking the sand walls of the mold and thus spoiling the casting. The rneans'for admitting motive in theinakingV of` the the guide devices 'gsfi'n the cope. land cope will be tors or; fiuidedevices can be readily removed f `from the sand and may be `repeatedly used.

e .operation of the moldmakiner d'e- S35-vice, it'vvillv be readily seenthat sin-ce fthe and dischargine,r the to cause the piston D to Huid to the Vcylinder al same therefrom,

move up and down as desired, may be of any usual or suitable kind, and since theseV means of themselves constitute e no part of this invention, they are not shown.

If a cope is used 1n connection with `the I mold, this may be formed in a flask as shown Yin Fig. 4, in which l E represents the flask and C, the .sand retaining frame which corresponds with the frame C used in thedrag and which, in the construction shown, is telescopic-ally arranged in the flask. The use of this sand retainer is the same as described for the drag, the retainerbeing filled With the desired amount of sand, sufficient to compensate for decrease in volume occu- -pied by the sand afterv compression or packing of the same. The iasks are also preferably arrangedfbetween guide tracksand the pattern for the cope `may be pressed into V`the sand'in the same manner as described for the j drag. y

-In order to havel the cope and drap; register when placed together,l the following; constructionis preferably used:

Each pattern plate` a. 'isfprovided with tivo or more locator patterns F. Figs. l and 2,

which may be of any Asuitablel or desiredy construction, 'those' `shown including one or more .legs or. projections j", tvvo being s hovvn in Figs. l Yand 2, connected by means of a connectingplate or body portion f. These locator patternsv are rigidlysecured tothe pattern plate (t and form impressions in the sand as shovvn in Fig. 3, which are adapted to receive .guide devices or locators G Which may be of metal or other and which "are jections connectedA by a body portion or connecting plate g. Each locator G is also provided on theoppositeside ofthe connect- .ing- .plate g Iwith a projection or part g2 which is' adapted to cooperate With corresponding' depressions g3 formed in the cope, Fig. 4f, It Will be readily understood that willfbe formed in the h drag and cope by correspondingv locator patterns. When the drag is completed, lccators or guide devices are placed into the depressions formed "in the drag and the projectionsgzi'ofthese 'locators Will extend upwardly beyond thel :upper face of the. drag. Consequently, when the'copeisinverted andplaced upon the.`

drag, care is taken that the projections g2 When this occurs. the. drag reference 'to each forpouring.l `After the pourin .q,`the locasuitable material provided with legslo'r promold the depressions Gr enter into the holes .accurately positioned with other and the mold is ready to the liask or 'sand pit is immaterial. The

only accuracy required inthe making of molds by means of this deviceV in placing the cope upon the'drag, and this is greatly facilitated bythe use of `the guide Vdevices or locators. lThis greatly facilitates the makingr of moldsand" saves a large amount of" time. fvFurthermore,` by using thesand retaining Walls With a definitel amount of sand, the sand in all of .the molds will be compressed to thesame extent. yTh'e'amount of` sand required `w ill vary with diierent patterns, butcan readily be determined, and

skill or judgment isV required' as to vhow much sand is needed sothat the .preparingl of the. sand beds or'flasks also requires no skill.

The machine as shown is particularly `when'fthis .amount is "once determined. no

Well adapted "for formingv a largeV number of i castings from thej'same pattern, but it is not intended `to limit .the device to such use, since the pattern' plate a is detachably mounted on'the plate Zl of .the plunger so that the same can be readily removed` and replaced by another pattern. j

'i claim as kmy invention l. The combination of a'pat'tern inn' of tivo parts adapted to .form the drag and the cope of a mold, plates on which said parts are mounted, 'projecting'portions on "said 'plates Lat the iside's of lsaid parts and adapted to make imp',ressins in thesand of said cope" and ,saidA drag,

e and meansfadapted to bel inserted' into" the impressions inf' the consistdranf and which is adapted to cooperate With corresponding' impressions in the cope to aline said Vcope and drag/j4 y 2. The combination of a lpattern consist ingro'f two parts adapted to form the drag and the cope of `Iay mold, plates 'on Which saidl parts are mounted, projecting portionson s'aidlplates atthe'sides-'of saidparts and adapted to make impressions in the sand of said cope and said drag, 'and `guide devices adapted to be insertedinto the 'impressions made in fthe vdragf and having =a part extendinf; beyond said drag and ,adapted to enter vinto impressions in the-cope to aline said cope land" said d-i'jagr.v

3;"The combination 3cfa pattern consisting-1ct ftvv'o parts :adapted tol lform the drag and the Cope of a mold, plates 0n which said parts are mountedl projecting portions on said plates at the sides oi said parts and adapted to make impressions in the sand of said cope and said drag, and a plurality of guide devices each consisting of an integral member having parts adapted to fit into an impression in the drag Jfor rigidly holding said member in said impression and having a part extending beyond the upper face of the drag and adapted to enter into an impression in the cooperating 'face of the cope, Wherelo)T said cope and drag may be aoeiln rately alined with reference to each other.

THOMAS W. DE LA HUNTY. 

